Invalid-lifter.



No4 873,07. `A PATENTED DEC. 1G, 190?.A G. LSEN a O5 J. JGHNSGN.

INVALD LFTER.

APPLICATION FLED MAE. ZO, 1907.

` www ff fix/155555 y fN/jlm/TO/@J lof 4the standard.

GEORGE OLSEN AND OLE J. JOHNSON, OF MUSKEGON, MICHIGAN.

INVALID-LINER.

To all whom it may concern:

Be it known that we, GEORGE E. OLsnN and OLE J. JOHNSON, citizens of the United States, residing at Muskegon, in the county of Muskegon and State of Michigan, have invented certain new and useful .improvements in Invalid-hitters, of which the following is a specification.

' This invention 'relates to invalid litters, particularly adapted for the use of hospitals and the like, for the purpose of lifting and conveying invalids from one place to another, and for lifting them from beds for convenience in making the beds or otherwise.

. The object ot' the invention is to `provide improved means for the purposes stated, characterized especially b v novel devices for raising and lowering the hammock or sling in which the invalid may be placed.

A further feature of the invention is an improved form of sling in which the invalid can convenientl)Y rest in a sitting position.

The invention is illustrated in the accompanying drawings, in which -Figure 1 is a side elevation thereof. Fig.' 2 is a plan view ol the tilting gear. Fig. 3

is a plan view oll one form ofhammock or sling. Fig. 4 is a plan View of another form of hammock or sling'. Referring speeilieallv to the drawings, 6 indicates a base or plati'orm mounted upon casters 7 i'or convenience oli transportation. Upon this platform, near one edge thereof, is a step hearing S which receives the lower end of a tubular standard t) which has at thc top an overhanging tubular arm l0. Antifriction balls 1l are provided between the step bearing and the lower end ol the stamtard.

l2 indicates an upright. which is located within standard t). rthis rod i.' tixed at the bottom to the platform and at the top has a racewatv for balls lil whichl form hearings between the head ol' the rod and the inner side 'l`he rod supports the standard and holds the same in upright position. The over-hanging arm 1() is braced by a brace 14 extending between the arm and the standard.

A frame for gearing is indicated at 15 set betweeuthe standard t) and arm 10, in the space above the brace 14. This frame snpports a Winding wheel lo the shalt of which `stillening rod the lower part ol the carries a pinion 17 which is in mesh with a gear ,18 Which has an integral drum 1t). 'The Specification of Letters Patent.

Application filed March 20. 1907. Serial No. 363.4:42.l

Patented bec. 1o, 1907.

gear is fast on its shaft 20. Loosely mounted on said shaft is a drum 21 having ratchet 22. The drums 19 and 20 l`orn1 opposite members of a clutch, V movable to engage or disengage the clutch, which is formed by corresponding projections 23 and recessesZ- on the adjacent faces of the res ective drums. The drum 21 may be move( means of the shifter consisting of a rod 25 having an arm 26 engaging the edge of the drum. A detent 27.0perated by a rod 28 serves to engage the ratchet 22 and prevent slip of the drum 21 when desired. And a detent 29 operated by a rod 30 is adapted to engage the teeth of the pinion 17 and so prevent back slip of the drum 19, 0r both drums when they are clutched together.

The drum 19 carries a chain 31, and the loose drum 21 isattached to two chains 32. These chains pass from the drums through an opening 33 in the under side of the tubular arm 1() and thence over rollers 34 and along within said arms and over rollers 35 at the outer end ot' the arm, and thence down to convenient position for attachment of the hammock.

The plain hammock or`sling 36, shown in Fig. 3, has ropes 37 at the end, with suitable connecting devices for attachment to the chains. The sling shown in Fig. 4 is particularlyY suitable i'or a sitting position. It has a body 3h with canvas wings 39 at the ends, occupying .about hall: the width of the end, and -also ropes 4t) in thc other halt. a patient. to rest easily in a sitting position, his arms may be passed through between the ropes llt), then when the sling is lifted he will he co|n|'ortabl \v supported and the position of the arms ill help to steady the body.

The drums and clutch shown enable the chains to be diil'erently operated so as to var v the position ol' the patient or otherwise adjust the position o'l the sling. The drum l!) which carries the single chain 3l may be operated alone, to alter the sitting or lying position, the drum 2l being disengaged by the clutch shifter. When tho proper adjustment is reached the drums may be clutched together and all chains raiscd-at once. Or by means ot the detent 27 the loose drum 21 can be held while the fast drum 1.9 is eased oil'. This diil'erent arrangement or adjustment is especially serviceable in lifting pa- 110 theA tien ts from a bed to proper position in sling,

and in deposit-in g them therefrom` onto To allowv the drum 21 being 60 into or out of engagement by n 'be/j.. The manner in which the er ard is mounted on the edge of the platform @Flows the platform to be run under the be so as o 'bring the arm over the bed; fr @Eng or 5 hammock may be slipped under the i *fed and 'then hooked or attached to he ne 15o lift the invalid in the manner described,

transport him Wherever desired.

We claim:

l10 l. En a f'ber, the combination of e Swinging erm and S'mldord, a frame thereon, a eher@ extendmg aereas the fra-me, a drum 'fest on the short, a drum loose on the shaft,

'said drums having Clutch members on their 20 emmeoted 35o thedrums.

In, testimony whereof We ax our signa- 2 tures, m presence or two wltnesses.

GEORGE E. OLSEN. OLE J. JOHNSDN E M HANSEN, A1, @foer- LEDERER. 

